The idea is that the lock can be easily used in other projects. The point of this version is to use only easily accessible materials that anyone can find.
I used it to make Holder with lock for 25mm strap for my Garmin GPSMap 64s.
The file can be modified as a STL or in Fusion 360. The lenght on both sides of the lock can be changed, but than the notch of the sliding part must also be moved. Fusion 360 can easily add champfers and other modifications.

There is also a version for a 25mm strap.